Beard: Created page with "

 packages: 	ntp  daemons: 	ntpd  ports: 	udp 123  other: 	NTP - Network Time Protocol. hierarchical structure of sources called strata. 		stratum 0 - atomic or gps clocks..."

2016-02-29T21:16:03Z

Created page with "<pre> packages: ntp daemons: ntpd ports: udp 123 other: NTP - Network Time Protocol. hierarchical structure of sources called strata. stratum 0 - atomic or gps clocks..."

New page

<pre>
packages:
ntp

daemons:
ntpd

ports:
udp 123

other:
NTP - Network Time Protocol. hierarchical structure of sources called strata.
stratum 0 - atomic or gps clocks
stratum 1 - servers obtain time from stratum 0
stratum 2 - clients/servers obtain time from stratum 1, etc.

supports up to 256 strata. lower strata not necessarily more reliable

configs:
/etc/ntp.conf - config file contains lines specifying servers to get time from.
server <domain-name>
restrict <addr> netmask <mask> nomodify notrap - allows another host to query your system for time information

commands:
hwclock - command used to work with bios system clock
ntpq -p - shows the servers the system is synchronized with
ntpdate -u <domain-name> - corrects the system date/time. must stop ntpd first. ntpdate may need to be run several times

</pre>

Ntpd - Revision history

Beard: Created page with "
packages: ntp daemons: ntpd ports: udp 123 other: NTP - Network Time Protocol. hierarchical structure of sources called strata. stratum 0 - atomic or gps clocks..."